#include<iostream>
using namespace std;

class A
{
public:
	A(int aa,char cc)
		:_a(aa)
		,_c(cc)
	{}
private:
	int _a;
	char _c;
};
class B
{
public:
	B(int bb)
		:_aa(bb,'d')
	{}
private:
	A _aa;
};
int main()
{
	A aa(12,'a');
	B bb(1);
	return 0;
}